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Nrrnn STATES CHARLES XV. PATTEN, OF SAN FRANCISCO, CALIFORNIA.

ORE-GONCENTRATOR.

EEPECIPICATION forming part of Letters Patent No. 315,824, dated April14, 1885.

Application filed August 17, 1883. (No model.)

T0 at wit/0112, it may concern.-

Be it known that 1, CHARLES W. Pnrrnn, a citizen of the United States,residing in the city and county of San Francisco, State of California,have invented certain new and useful Improvements in Ore- Concentrators;and I do hereby declare that the following is a full, clear, and exactdescription of my invention and of the manner in which I construct anduse the same, the accompanying drawings being referred to by figures andletters.

My invention relates to ore-concentrators of that class in which thematerial in theform of pulp is distributed upon and caused to flow fromend to end of atrough, pan, or table having a combination of shakingandrocking motions imparted to it, whereby the snlphurets or particlessettlingon the bottom are drawn upward against the current of materialbeing treated and discharged from the upper end, while the refuse matteris carried off at the lower end.

As hereinafter more particularly described,

my invention embraces certain improvements upon theLetters Patent No.249,791, granted to me on the 22d day of November, 1881, for anamalgamator and concentrator, and it relates to improved means formounting and operating a pan ortrough having its concentratingsurfaceformed of stepped sections inclined against the current of materialbeing treated; also to means for mechanically discharging the metallicparticles as they collect at the pocket or step formed by the lift orrise of one section of the pan above another.

In the said drawings referred to, Figure 1 is a side elevation of myimproved machine. Fig. 2 is a vertical longitudinal section. Fig. 2 isan enlarged detail section showing the means for the automatic dischargeof the sulphurets from the pocket of the pan-sections. Fig. 3 is a topview or plan of Fig. 1.

The surface of the pan or troughAis formed of stepped-sections 0.,having an inclination in the direction in which the mass or current ofmaterial flows, or from the head downward to the end where the tailingspass off. I prefer to have the inclination of these sections uniform. Iprefer, also, to raise the outer end of the first or highest section, sothat its surface inclines in both directions from the ends toward thepoint where the feed-hopper is placed. This givesan ascending surface inboth directions from the distributing-point. This principle ofconstruct-ion is the same as that employed by me in the machinedescribed in my former patent above referred to; but the amount ofinclination of the upper or higher end of the first section isconsiderably reduced in this machine, so that practically no deepdepression or V-shaped pocket is produced, as described in my formerpatent. The perforated discharging-plate and receptacle below to receivethe concentrations are also dispensed with in this improved machine, andthe concentrations are discharged from the upwardly inclining end of thehead or first section, and also from the bottom of each inclinedsection, where the end of one section overlaps and rises above the next.

' The discharge from the bottom of each in clined surface is effected bymeans of an internal passage or channel leading through the edge orvertical rise of the next section above it, and then downward with adirect bend to connect with a cross conducting tube or outlet having adischarge at the side of the pan. This channel B has its bottom on alevel with the surface of the lower section, and it is carried upward tomeet the vertical passage B at greater or less inclinations against thetravel of the sulphurets passing out. The double thickness of materialproduced by overlapping the sections permits these passages to be formedin the wood or material of which the inclined surfaces are produced.This discharge-passage B may also be carried through the edge of theuppermost section and out over the inner end of thelower section, asindicated in Fig. 2, and not down through or into the end of saidsection, as shown in the detail view, Fig. 2.

The transverse outlet B should connect or lead into a receiving box ortrough at the side of the machine.

A water'supply pipe, D, is fixed across the upper end of the pan, and anangular deflecting-plate, D, is placed over it to throw the stream ofwater down upon the surface beneath.

The feed-hopper is a box, IE, secured across the top of the pan upon theupper sides, A.

It is employed to receive the pulp from the battery and distribute itevenly across the surface of the pan.

The distributing-outlets are formed ofa nu mber of short upright tubes,0 c, fixed in and projecting through its bottom. The ends of thesetubesare carried up above the level of the hopper-bottom, in. order toform along the bottom surface, inside, a pocket or receptacle to retainany amalgam that may be carried over by the stream of pulp from thebattery. The amalgam, being considerably heavier than the otherparticles,wiil be caught and retained in the space around the tubes,while the pulp will pass off through the tubes and be distributed uponthe surface beneath. Much valuable amalgam that'would otherwise escapeis thus saved.

The horizontal vibration and a transverse rocking motion are producedfrom a single rotating shaft, H, placed beneath the trough in bearings hh on the stationary base or frame.

Two springlegs, I J, are fixed rigidly by their lower ends to theeross-timbers of the frame, and are provided with open cup-shapedsockets t i on their upper ends. These sockets are formed of cups t i,secured to the legs by bolts j. Fixed bearing-points is, havingball-shaped ends K to fit the sockets z, are bolted to the bottom of thepan-one at the upper end or head, and the other near the lower endthetwo being in line in the middle of the pan. These points of supportpermit universal motion of the trough longitudinally and laterally. Thelongitudinal motion is permitted by Virtue of the elasticity of the legsI J, that arefixed at their lower ends to the frame and carry the panupon their free ends. The longitudinal motion is produced by the actionof a cam, L, on the shaft H and a stop, M, fixed on the bottom of thepan. The lateral rocking motion is produced through the medium of acrank, N, fixed to the outer end of the shaft H, and connected by aswivel or pivot, 19, to a slide, P, carried bya horizontal guide-rod, R,on the side of the trough. The lateral motion is a regular rockingmotion upon centers that are at the upper ends of the two spring-legs.This motion is equal and uniform for the whole length of the pan.

, The guide-rod is held in brackets S S, bolted to the side of thetrough, and its length is proportioned to the stroke of the crank N.

The brackets are slotted to permit vertical adjustment of the rod. 7

The sleeve or slide P connects the crank and guide-rod together, and,while free to slide from one extreme to the other of the throw, itconverts the continuous rotation of the crank-shaft into a rockingmotion of the pan on the center K K.

In connection with the longitudinal vibration a slight blow, jar, orconcussion is given to the trough at the end of each forward movement bysecuring a bumper, T, upon the crosstimbers of the frame and fitting ablock, T, to the bottom of the trough in line with the of the stationaryframe, and the lower end of the spring J is fixed to a tappet or finger,W, having a straight back edge to set against the sooket-plate and ofsufficient length to hear I at its upper end against a horizontalset-screw,

Y, provided in a box, 3 in the cross-timber. This finger and the end ofthe spring-leg are rigidly fixed together, and while the end of thespring rests in the socket the finger W lies outside of the bowl orhook-shaped part.

By setting up the screw Y the finger will be pressed back from theplate, and the spring will be thrown forward at the upper end incorresponding manner. The resistance of the stop to the blow of the camis thereby increased, and the force of the concussion is changedaccordingly.

A leveling device is fixed to one end of the stationary frame or base ofthe machine for the purpose of adjusting the inclination of theconcentrating-surface to a greater or less degree of pitch. This deviceis formed of two cams, 2, one pivoted to each side of the side timbersof the frame at the head or upper end, and held in position by means ofratchet-teeth 2 on the blocks and pawls c on the frame. Thisconstruction is clearly shown in Fig. l of the drawings. 7

By turning the camsz one way or the other the device will be lowered orraised at that end, and for this purpose, in practice, the cams willrest upon a support-such as afloor or sill.

Having thus fully described my invention, what I claim, and desire tosecure by Letters Patent, is I 1. The combination of aconcentrating-pan, spring legs or supports placed under the centerthereof, and connected thereto at the upper ends by ball-and-socketjoints that permit of universal motion of the pan upon them, and havingtheir lower ends rigidly fixed, and mechanism combined with said pan forimparting to it longitudinal vibration and a transverse rocking motionupon said springsupports, substantially as herein set forth.

2. The combination, with a concentratingpan and spring-supports placedunder the center thereof, and provided with universal joints and heldrigidly at their lower ends, of the transverse shaft H, the cam, and thestop on the pan, substantially as described.

3. The combination, with a concentratingpan and spring-supports placedunder the center of said pan, and having universal-joint connectionstherewith, of the shaft H, the crank, the slide, the guide-rod, the cam,and the stop, substantially as and for the purpose set forth.

4. A concentrating-pan formed of stepped sections, the head, or firstsection being in clined in two opposite directions longitudi-' other, inan upwardly-inclined position for a short distance, a vertical channel,B, leading down from the upper end of channel B, and an outlet-channel,B as set forth.

7. The combination, with the cam, stop,

pan, and spring-support, of means for regulating the resistance of thespring-support to the cam, consisting of the open socket w, tappet W,and set-screw Y, substantially as described.

GHARLES W. PATTEN. [1 s] Witnesses:

EDWARD E. OsBoRN, GEORGE BROSNAN.

